The Popular Science Review: A Quarterly Miscellany of Entertaining and Instructive Articles on Scientific Subjects, Volume 12James Samuelson, Henry Lawson, William Sweetland Dallas Robert Hardwicke, 1873 |
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Página 15
... flame of a candle or lamp held in it . The maximum of ex- plosiveness is reached when the proportion of gas is from th to 4th if a light be brought into such a mixture , the whole flashes into flame with fearful violence , and the ...
... flame of a candle or lamp held in it . The maximum of ex- plosiveness is reached when the proportion of gas is from th to 4th if a light be brought into such a mixture , the whole flashes into flame with fearful violence , and the ...
Página 18
... flame . To obviate this the foul air is carried through a gallery , known as a " dumb drift , " which opens into the up- cast some way above the furnace : even this precaution , how- ever , is thought to have been ineffectual in some ...
... flame . To obviate this the foul air is carried through a gallery , known as a " dumb drift , " which opens into the up- cast some way above the furnace : even this precaution , how- ever , is thought to have been ineffectual in some ...
Página 21
... flame cannot pass through the gauze except under pressure . * In Davy's original lamp the light is simply enclosed in a cylinder of this gauze , but this arrangement has a somewhat feeble illuminating power . Modifications have been ...
... flame cannot pass through the gauze except under pressure . * In Davy's original lamp the light is simply enclosed in a cylinder of this gauze , but this arrangement has a somewhat feeble illuminating power . Modifications have been ...
Página 23
... flame elongates and takes a pale bluish hue , till the gas is present in quantity enough to cause explosion within the gauze . These indications enable a trained eye to estimate to a very fair degree of approxi- mation the proportion of ...
... flame elongates and takes a pale bluish hue , till the gas is present in quantity enough to cause explosion within the gauze . These indications enable a trained eye to estimate to a very fair degree of approxi- mation the proportion of ...
Página 86
... flames , and even the earth appeared as if ready to take fire . That portion of the sky where there were no stars , seemed to be divided into many parts , and this lasted for a long time . ' Then follows a reference to the ' great fear ...
... flames , and even the earth appeared as if ready to take fire . That portion of the sky where there were no stars , seemed to be divided into many parts , and this lasted for a long time . ' Then follows a reference to the ' great fear ...
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acid American animals anthers apparatus appears Arctocebus arranged Astronomer Astronomer Royal atmosphere Biela's birds body bones carbon carbonic acid cause character Chemical Chimpanzee chlorophyll Cirripedes coal colour comet compared contains Crustacean described diameter Elapida electric existence experiments explosion fact feet flowers fossil fuze genus geological Gibbons gives Gorilla gun-cotton Halley's method heat illustrated inches insects instance interesting Journal Jupiter known latisternal apes Lemur length less light maps matter maxillæ means meteors Microscopical mode Monkeys motion nature nearly object observed obtained Orang orbit ordinary organs paper parasites pass pistil plants plates Pleistocene pollen portion present produced Professor recent remarkable resemblance rocks Royal says scientific seen ship snakes Society species specimens Spider Monkeys stamens structure surface telescope tion torpedoes venomous snakes vessel volume wire XII.-NO